The Pain-killer Polka Song, an advert for Perry Davis' Pain Killer by F. Archer, ca. 1899. Wellcome Library no. EPH+57

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: The Pain-killer Polka Song, an advert for Perry Davis' Pain Killer by F. Archer, ca. 1899. Wellcome Library no. EPH+57. Wellcome Collection. Source: Wellcome Collection.